[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-7284) ExcludeFalse Capability Query by Example Example

ExcludeFalse Capability Query by Example Example ------------------------------------------------ Key: HHH-7284 URL: https://hibernate.onjira.com/browse/HHH-7284 Project: Hibernate ORM Issue Type: Improvement Components: query-criteria Environment: all Reporter: Uday Kari Assignee: Steve Ebersole Priority: Minor Labels: search In web form development, checkboxes are mapped to booleans properties. When using a form to conduct Query By Example, the results should exclude un-checked or false properties. I have already fixed this for my application, here is the code...you are welcome to use it. /* * Hibernate, Relational Persistence for Idiomatic Java * * Copyright (c) 2010, Red Hat Inc. or third-party contributors as * indicated by the @author tags or express copyright attribution * statements applied by the authors. All third-party contributions are * distributed under license by Red Hat Inc. * * This copyrighted material is made available to anyone wishing to use, modify, * copy, or redistribute it subject to the terms and conditions of the GNU * Lesser General Public License, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License * for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this distribution; if not, write to: * Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor * Boston, MA 02110-1301 USA */ package org.hibernate.criterion; import java.io.Serializable; import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import org.hibernate.Criteria; import org.hibernate.EntityMode; import org.hibernate.HibernateException; import org.hibernate.engine.TypedValue; import org.hibernate.persister.entity.EntityPersister; import org.hibernate.type.CompositeType; import org.hibernate.type.Type; import org.hibernate.util.StringHelper; /** * Support for query by example. * <pre> * List results = session.createCriteria(Parent.class) * .add( Example.create(parent).ignoreCase() ) * .createCriteria("child") * .add( Example.create( parent.getChild() ) ) * .list(); * </pre> * "Examples" may be mixed and matched with "Expressions" in the same <tt>Criteria</tt>. * @see org.hibernate.Criteria * @author Gavin King */ public class Example implements Criterion { private final Object entity; private final Set excludedProperties = new HashSet(); private PropertySelector selector; private boolean isLikeEnabled; private Character escapeCharacter; private boolean isIgnoreCaseEnabled; private MatchMode matchMode; /** * A strategy for choosing property values for inclusion in the query * criteria */ public static interface PropertySelector extends Serializable { public boolean include(Object propertyValue, String propertyName, Type type); } private static final PropertySelector NOT_NULL = new NotNullPropertySelector(); private static final PropertySelector ALL = new AllPropertySelector(); private static final PropertySelector NOT_NULL_OR_ZERO = new NotNullOrZeroPropertySelector(); //////////////////////////////////////////////////////////// // Uday Edits // private static final PropertySelector NOT_FALSE = new NotFalsePropertySelector(); static final class NotFalsePropertySelector implements PropertySelector { public boolean include(Object object, String propertyName, Type type) { if (object == null) { return false; } else if (object instanceof Boolean) { return ((Boolean) object).booleanValue(); } else { return true; } } } /** * Exclude false-valued properties */ public Example excludeFalse() { setPropertySelector(NOT_FALSE); return this; } // // End ///////////////////////////////////////// [...]